Food that is given to cows, horses, and other farm animals. (Cambridge Dictionary)
Something fed to domestic animals. (Merriam – Webster)
Inferior or readily available material used to supply a heavy demand. (Merriam – Webster)
Fodder is food that is given to cows, horses, and other animals. (Collins Dictionary)
If you say that something is fodder for a particular purpose, you mean that it is useful for that purpose and perhaps nothing else. (Collins Dictionary)
Food, especially dried hay or straw, for cattle and other livestock. (Oxford Dictionaries)
A person or thing regarded only as material for a specific use. (Oxford Dictionaries)
Meaning of fodder.